/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchy.h
Sets a control's current value given its index
void SetControlValue ( int32 InElementIndex, const [FRigControlValue](API\Plugins\ControlRig\Rigs\FRigControlValue) & InValue, [ERigControlValueType](API\Plugins\ControlRig\Rigs\ERigControlValueType) InValueType, bool bSetupUndo, bool bPrintPythonCommands )